WO2023121177A1 - 면역 회피성 항종양 아데노바이러스 - Google Patents
면역 회피성 항종양 아데노바이러스 Download PDFInfo
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Definitions
- the present invention relates to an anti-tumor adenovirus capable of evading the immune system in vivo.
- Cancer is one of the diseases that cause the most deaths worldwide, and the development of innovative cancer treatments can reduce medical costs and create high added value at the same time. Also, according to statistics in 2008, molecular therapies that can overcome resistance to existing anticancer drugs accounted for $17.5 billion in 7 major countries (US, Japan, France, Germany, Italy, Spain, UK), and in 2018 In the case of 2008, it is expected to account for a market size of about $45 billion, showing a growth rate of 9.5% compared to 2008. Cancer treatment is divided into surgery, radiation therapy, chemotherapy, and biological therapy. Among them, chemotherapy is a treatment that suppresses or kills the proliferation of cancer cells with chemical substances.
- Oncorine modified by the E1B-55KD deletion enabling conditional replication in P53-deficient cancer cells.
- Oncorine is administered by intratumoral injection for head and neck cancer.
- Adenoviruses have been widely used as gene transfer vectors for gene therapy as well as oncolytic agents for cancer treatment. Adenoviruses exhibit several characteristics that make them suitable for this use.
- adenovirus in terms of safety, does not cause life-threatening diseases in humans, and its viral genome is non-integrative, preventing insertional mutations. Clinical trials using adenovirus-based vectors report that these viruses have good toxicity and safety profiles, although the need for improved efficacy remains for systemic administration.
- systemic administration i.e., intravenous or intraarterial injection into the bloodstream
- systemic administration is essential to treat disseminated tumors in an advanced or metastatic state.
- adenovirus shows significant limitations in reducing the therapeutic effect when injected into the bloodstream.
- Adenovirus type 5 (Ad5) undergoes several neutralizing interactions that dramatically reduce the bioavailability of the virus in the bloodstream.
- liver sequestration since >90% of the injected dose resides in the liver, mainly hepatic macrophages, also called Kupffer cells, but also liver sinusoidal endothelial cells (LSECs) and liver cells.
- LSECs liver sinusoidal endothelial cells
- Direct interaction with blood cells and proteins is also a major obstacle.
- Ad5 directly binds to blood cells such as red blood cells through CAR receptors and can bind to platelets through integrins.
- Antibodies not only neutralize viruses directly, but can also trigger an innate immune response by complement activation and docking of viral particles to Fc receptors on monocytes and neutrophils.
- viral re-administration increases the concentration of anti-Ad neutralizing antibody (NAb), thus enhancing viral neutralization.
- NAb anti-Ad neutralizing antibody
- Opsonization of adenovirus by antibodies and complement can also enhance clearance by Kupffer cells. Overall, these interactions result in a significant shortening of the half-life of Ad in the blood to about minutes in mice and humans. Considerable efforts have been made to avoid neutralization by antibodies and immune cells during systemic administration of adenovirus, but it has been reported that systemic spread is still limited, transient and usually ineffective (Ferguson et al. 2012).
- An object of the present invention is to provide an anti-tumor adenovirus.
- Another object of the present invention is to provide a pharmaceutical composition for treating cancer.
- an object of the present invention is to provide a use for preventing or treating tumors of the adenovirus.
- an object of the present invention is to provide a method for treating cancer by administering the adenovirus to a subject suffering from cancer.
- the present invention provides an adenovirus comprising a nucleic acid encoding a transferrin binding moiety.
- the present invention provides a pharmaceutical composition for treating cancer comprising the anti-tumor adenovirus.
- the present invention provides a use for preventing or treating tumors of the adenovirus.
- the present invention provides a method for treating cancer, wherein the adenovirus is administered to a subject suffering from cancer.
- the adenovirus containing the nucleic acid encoding the transferrin binding domain of the present invention significantly increased the effect of infecting and killing tumor cells, and increased the plasma half-life by avoiding the immune response in the body due to the increased binding with transferrin. And, because it is specifically delivered to cancer cells, it has a systemic therapeutic effect, local delivery is possible, and excellent selectivity shows remarkable anti-tumor efficacy, so it can be usefully used as an anti-cancer composition or an anti-cancer adjuvant for various cancer types. there is.
- 1 is a diagram showing the antibody avoidance mechanism of the anti-tumor adenovirus comprising the transferrin-binding domain of the present invention.
- Figure 2 is a diagram showing the production process of the anti-tumor adenovirus containing the transferrin-binding domain (moiety) of the present invention.
- FIG. 3 is a diagram showing a vector map of pAd1128, an adenovirus envelope-associated plasmid containing the transferrin-binding domain of the present invention at the HVR1 position of hexon.
- FIG. 4 is a diagram showing a vector map of adenovirus including an albumin binding domain (ABD) (CA10G-A)
- FIG. 5 is a diagram showing a vector map of an adenovirus including transferrin-binding moiety Tbp29aa in hexon of the adenovirus vector of the present invention (HVR1-Tbp29aa).
- FIG. 6 is a diagram showing a vector map of an adenovirus comprising a fusion protein comprising a linker at the N-terminus and C-terminus of the transferrin binding moiety Tbp 55aa in hexon of the adenovirus vector of the present invention ( HVR1-Tbp (G 4 S 1 ) 3 55 aa).
- FIG. 7 and 8 are diagrams showing the immune evasion ability of adenovirus containing a transferrin-binding domain:
- CA10G control adenovirus
- CA10G-A (CA10G-a): adenovirus containing an albumin binding domain;
- HVR1-Tbp29aa (Tbp-29aa): an adenovirus comprising the transferrin binding moiety Tbp29aa in the hexon of an adenoviral vector;
- HVR1-Tbp(G4S1)3 55aa An adenovirus comprising the transferrin binding moiety Tbp55aa and a linker in the hexon of an adenoviral vector.
- Figure 9 is a diagram showing immune evasion ability according to the insertion site of the transferrin-binding moiety into adenovirus:
- CA10G control adenovirus
- CA10GT HVR1-(G 4 S 1 ) 3 -Tbp 55aa adenovirus with transferrin binding moiety inserted at HVR1 position of hexon;
- HVR2 29aa HVR2-Tbp 29aa adenovirus with a transferrin binding moiety inserted at the HVR2 position of hexon;
- HVR2 L3 55aa HVR2-(G 4 S 1 ) 3 -Tbp 55aa adenovirus.
- nucleic acids are written in the 5′ ⁇ 3′ direction from left to right.
- Numerical ranges recited within the specification are inclusive of the numbers defining the range and include each integer or any non-integer fraction within the defined range.
- the present invention relates to an adenovirus comprising a nucleic acid encoding a transferrin binding moiety in the coding region of a hypervariable region (HVR) of a hexon protein.
- HVR hypervariable region
- the adenovirus may include a nucleic acid sequence of SEQ ID NO: 1 or 3.
- the adenovirus may include a nucleic acid sequence of hexon containing a transferrin-binding moiety, and the nucleic acid sequence of hexon containing a transferrin-binding moiety is the nucleotide sequence of SEQ ID NO: 8 or the base sequence of SEQ ID NO: 10
- the hexon comprising the transferrin binding moiety may comprise the amino acid sequence of SEQ ID NO: 9 or 11.
- the hypervariable region of the adenovirus hexon protein may be HVR1
- the HVR1 may include the amino acid sequence of SEQ ID NO: 7
- the nucleic acid sequence encoding the HVR1 includes the nucleotide sequence of SEQ ID NO: 6 can do.
- the nucleic acid encoding the transferrin-binding moiety may be included between the codons expressing the 154th and 155th amino acids of the nucleotide sequence (SEQ ID NO: 6) encoding the hexon of adenovirus.
- the transferrin-binding moiety may include the amino acid sequence of SEQ ID NO: 2 or 4, and the nucleic acid sequence encoding the transferrin-binding moiety may include the nucleotide sequence of SEQ ID NO: 1 or 3.
- the N-terminus, the C-terminus, or the N-terminus and the C-terminus of the transferrin binding moiety may be connected to the hexon protein through a linker, and the linker may include the amino acid sequence of SEQ ID NO: 5 .
- the transferrin binding moiety can be directly attached to the hexon protein, ie the N-terminus and C-terminus of the transferrin-binding moiety are directly linked to the hexon protein.
- the transferrin-binding moiety can also be linked to the hexon protein via a linker sequence.
- the N-terminus and/or C-terminus of the transferrin-binding moiety is linked to the hexon protein via a linker sequence.
- the transferrin binding moiety may be located on the outer surface of the hexon protein.
- the adenovirus of the present invention can be coated with a transferrin-binding domain by including a transferrin-binding moiety on the outer surface of the hexon protein, thereby protecting itself from neutralizing antibodies present in the bloodstream.
- the adenovirus may be a human adenovirus, may be selected from the group consisting of human adenovirus serotypes 1 to 57, may be human adenovirus serotype 5 (GenBank: AY339865.1), It may be a chimeric adenovirus of human adenovirus serotype 5/3.
- the adenovirus may further include a tissue-specific promoter or a tumor-specific promoter, and the promoter may be operably linked to an endogenous gene of the adenovirus.
- the promoter may be selected from the group consisting of E2F promoter, telomerase hTERT promoter, tyrosinase promoter, prostate-specific antigen promoter, alpha-fetoprotein promoter and COX-2 promoter.
- the telomerase hTERT promoter may include the nucleotide sequence of SEQ ID NO: 17 and may be operably linked to E1A and E1B of the endogenous adenovirus gene.
- the endogenous gene of the adenovirus has a structure of 5'-ITR-C1-C2-C3-C4-C5 3-'ITR;
- C1 includes E1A, E1B or E1A-E1B;
- C2 includes E2B-L1-L2-L3-E2A-L4;
- C3 does not include E3 or includes E3; said C4 includes L5; and
- C5 may not include E4 or may include E4.
- an IRES sequence may be further included between E1A and E1B of the endogenous gene of the adenovirus.
- the E1A may include the nucleotide sequence of SEQ ID NO: 18.
- the E1B may include the nucleotide sequence of SEQ ID NO: 19.
- the IRES may include the nucleotide sequence of SEQ ID NO: 20.
- the promoter can be operably linked to E1A and E1B of the endogenous gene of adenovirus.
- the adenovirus may include the hTERT promoter-E1A-IRES-EIB including the nucleotide sequence of SEQ ID NO: 15.
- the adenovirus may further include an expression cassette expressing a foreign gene, and the expression cassette may be included in the E3 region of the endogenous gene of the adenovirus.
- the adenovirus of the present invention may further include a CMV promoter and a foreign gene, and the CMV promoter and a foreign gene operably linked thereto may be included in the E3 region of the endogenous gene of the adenovirus.
- the adenovirus may be an oncolytic adenovirus, an anti-tumor adenovirus.
- the adenovirus of the present invention may have higher oncolytic activity than wild-type adenovirus and may be an oncolytic adenovirus.
- the adenovirus of the invention is a replication competent adenovirus, anti-tumor or oncolytic adenovirus.
- the adenovirus is a replication deficient adenovirus or a replication-deficient adenovirus.
- Replication-deficient or replication-defective adenoviruses are viruses that are unable to replicate in target cells, used in gene therapy as gene carriers to target cells because they aim to express therapeutic genes in cells and not to degrade the cells. It is an adenovirus.
- the adenovirus may further include a capsid modification to increase the infectivity of the adenovirus or to target it to a receptor present in tumor cells.
- the modification of the capsid may be to insert the RGD motif in the H1 loop of the adenoviral fiber protein.
- the modification of the capsid may be to form a chimeric adenovirus by substituting a fiber gene or a part thereof with a homologous part derived from an adenovirus of another serotype, and a fiber gene or a part thereof derived from a serotype 3 adenovirus.
- a portion including a capsid substituted with a portion thereof and a portion excluding the fiber gene may be constructed to include a gene derived from serotype 5 adenovirus.
- the adenovirus may include one or more non-adenoviral genes, the non-adenoviral genes may be genes used in cancer gene therapy, and the genes used in cancer gene therapy It may be selected from the group consisting of tumor-suppressor genes, genes encoding anti-tumor interfering RNAs, and immunostimulatory genes.
- the adenovirus of the present invention can be selectively dispersed in certain tissues in vivo, thereby avoiding or significantly reducing expression in non-target or non-tumor tissues.
- the anti-tumor adenovirus of the present invention can be used for cancer gene therapy.
- transferrin is a glycoprotein that binds very strongly and reversibly to iron. Although only about 0.1% of the iron present in the body is bound to transferrin, it plays a very important role in regulating the amount of iron in the body. Transferrin exists in the blood and plays a role in absorbing iron. In the present invention, transferrin in the blood binds to the transferrin-binding moiety of the present invention, thereby enabling adenovirus to avoid antibodies in vivo, thereby increasing the blood half-life during systemic administration of adenovirus.
- the term "transferrin-binding moiety” refers to any amino acid sequence capable of binding to transferrin, that is, having binding affinity. Preferably, it can bind serum transferrin, more preferably human serum transferrin.
- the term "transferrin-binding moiety” includes natural transferrin-binding domains (eg, transferrin present in bacterial proteins) and transferrin-binding sequences derived from synthetic peptides. In a preferred embodiment, the transferrin-binding moiety is selected from transferrin binding domains from Neisseria Meningitidis , functionally equivalent variants thereof.
- transferrin binding domain refers to any region derived from a native protein that is capable of binding transferrin with sufficient specificity to ensure protection from neutralizing antibodies, and may be used herein in the same language as transferrin binding moiety.
- transferrin binding / binding moiety, transferrin binding domain and transferrin binding peptide / protein / protein are used interchangeably, but transferrin binding / binding moiety includes both transferrin binding domain and transferrin binding peptide / protein / protein , more preferably a transferrin binding/binding moiety may refer to a synthetic peptide comprising a partial amino acid sequence of a transferrin binding domain of a transferrin binding/binding peptide/protein/protein.
- the present invention includes functionally equivalent variants of the aforementioned transferrin-binding moieties.
- the term "functionally equivalent variant” refers to any derivative derived from the transferrin-binding moiety by insertion, deletion or substitution of one or more residues, which substantially retains the ability to interact with transferrin as determined above. refers to a polypeptide. In a preferred embodiment, the polypeptide has at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or A polypeptide is considered to be a functionally equivalent variant of the transferrin binding moiety if it exhibits 100% transferrin binding capacity.
- the polypeptide is at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or 100% efficient with the transferrin binding domain of SEQ ID NO: 2 or 4. can neutralize the antibody, the polypeptide is considered a functionally equivalent variant of the transferrin binding moiety.
- the level of identity between the two polypeptides is determined using computer algorithms and methods well known to those skilled in the art. do. Identity between two amino acid sequences is preferably determined by the BLASTP algorithm [BLAST Manual, Altschul, S., et al., NCBI NLM NIH Bethesda, Md. 20894, Altschul, S., et al., J. Mol. Biol. 215: 403-410 (1990)], but other similar algorithms may also be used. BLAST and BLAST 2.0 are used applying the parameters mentioned herein to determine percent sequence identity. Software for performing BLAST analyzes is publicly available through the National Center for Biotechnology Information.
- the type of transferrin-binding moiety includes, but is not limited to, various peptides, antibodies, etc. in addition to the moiety described in the Examples of the present invention.
- the transferrin binding moiety is US5912336, US7582730, US6437096, US6090576, US7258989, US6004562, US6391316, US10149900, US6610506, US20030186848A1, US20200030428A1, US Transferrin binding proteins (Tbp1, Tbp2) from various bacteria described in 20080206260A1, US6015688 and US20040258695A1 , TbpA, TbpB, etc.), iron-regulated proteins, iron-regulated outer membrane proteins, transferrin receptor proteins, Moraxella catarrhalis outer membrane protein B1, transferrin binding A chimeric fusion protein comprising a peptide, a recombinant transferrin-binding peptide, a fragment or analog thereof of the peptide or protein,
- the antibodies include whole antibody forms as well as functional fragments of antibody molecules.
- a full antibody has a structure having two full-length light chains and two full-length heavy chains, and each light chain is connected to the heavy chain by a disulfide bond.
- a functional fragment of an antibody molecule refers to a fragment having an antigen-binding function, and examples of antibody fragments include (i) a light chain variable region (VL) and a heavy chain variable region (VH) and a light chain constant region (CL) and a Fab fragment consisting of the first constant region of the heavy chain (CH1); (ii) a Fd fragment consisting of the VH and CH1 domains; (iii) an Fv fragment consisting of the VL and VH domains of a single antibody; (iv) a dAb fragment consisting of a VH domain (Ward ES et al., Nature 341:544-546 (1989)]; (v) an isolated CDR region; (vi) a bivalent fragment comprising two
- F(ab')2 fragments (vii) single-chain Fv molecules (scFv) joined by a peptide linker that links the VH and VL domains to form an antigen-binding site; (viii) bispecific single-chain Fv dimers. (PCT/US92/09965) and (ix) a multivalent or multispecific fragment produced by gene fusion (diabody WO94/13804).
- the term "linker sequence” acts as a hinge between the hexon protein and the transferrin-binding moiety to provide a space between the two factors, so that the secondary structure of the hexon protein affects the presence of the transferrin-binding moiety refers to an amino acid sequence that does not accept and vice versa.
- the linker sequence may have any length that allows the two elements to move independently of each other while maintaining the tertiary structure of the individual elements.
- the linker sequence is a flexible linker peptide less than 31 amino acids in length. More preferably, the linker sequence comprises less than 10, less than 5, less than 4 or less than 2 amino acids.
- the linker sequence comprises two or more amino acids selected from the group consisting of glycine, serine, alanine and threonine.
- the linker is a polyglycine linker. In the case of a linker sequence, it can be represented by SEQ ID NO: 5 in the present invention.
- Other linkers may alternatively be used (Reddy Chichili, VP., Kumar, V., and Sivaraman, J. (2013). Linkers in the structural biology of protein-protein interactions. Protein Science 22(2):153- 67).
- operably linked refers to a functional linkage between a gene expression control sequence (eg, a promoter, a signal sequence, or an array of transcriptional regulatory factor binding sites) and another gene sequence, whereby Regulatory sequences will control the transcription and/or translation of said other gene sequences.
- a gene expression control sequence eg, a promoter, a signal sequence, or an array of transcriptional regulatory factor binding sites
- promoter refers to an untranslated nucleic acid upstream of a coding region that includes a binding site for RNA polymerase and has an activity of initiating transcription of a gene downstream of the promoter into mRNA. say sequence.
- the promoter may be any promoter capable of initiating shRNA expression.
- a promoter that constantly induces the expression of the target gene at all times or a promoter that induces the expression of the target gene at a specific location and time (inducible promoter)
- examples include the U6 promoter, the H1 promoter, the cytomegalovirus (CMV) promoter, the SV40 promoter, the CAG promoter (Hitoshi Niwa et al., Gene, 108:193-199, 1991), the CaMV 35S promoter (Odell et al., Nature 313: 810-812, 1985), Rsyn7 promoter (U.S. Patent Application No.
- the promoter of the present invention may be a U6 promoter, HI promoter, or CMV promoter, and according to a preferred embodiment of the present invention, a CMV promoter may be used.
- tissue-specific is intended to mean that a promoter operably linked to a gene essential for replication functions in a tissue-specific manner to proceed with replication in a tissue. This may occur because positive transcription factors that activate the promoter are present in that tissue and not in non-target tissues. It may also occur due to the absence of transcriptional inhibitors, which are normally formed in non-target tissues and prevent transcription as a result of the promoter. Thus, when transcribed, it is directed towards genes essential for replication, such that replication of the vector and its attendant function in the target tissue takes place.
- Tissue specificity relates specifically to targeting the abnormal counterpart of a particular tissue while avoiding its normal counterpart, or treating abnormal tissue while avoiding other types of surrounding tissue other than the abnormal tissue.
- a promoter is "tumor-specific", meaning that the promoter functions specifically in tumor tissue.
- the recombinant adenovirus of the present invention is useful for treating metastases to the liver.
- a specific example is colorectal cancer, which often metastasizes to the liver. When colorectal cancer metastasizes to the liver, it has been shown that the CEA promoter is active in metastatic cells but not in normal liver cells.
- a normal adult human liver will not be able to support replication of a virus that has viral genes essential for replication linked to the colorectal cancer CEA-specific promoter. Replication must occur in the primary cancer cell.
- the alphafetoprotein promoter which is active only in hepatocellular carcinoma.
- the tyrosinase promoter which is active only in melanoma and not in normal skin. In each case, replication is expected in abnormal cells and not in normal cells.
- tissue-specific promoters include, but are not limited to, alphafetoprotein promoter, DE3 promoter, tyrosinase promoter, carcinoembryonic antigen (CEA) promoter, surfactant protein promoter, E2F promoter, telomerase hTERT promoter, prostate-specific antigen promoter, COX-2 promoter, albumin gene promoter, core promoter of hepatitis virus, promoter of globulin-binding protein that binds to thyroxine and ErbB2 promoter.
- alphafetoprotein promoter DE3 promoter
- tyrosinase promoter carcinoembryonic antigen (CEA) promoter
- surfactant protein promoter E2F promoter
- telomerase hTERT promoter telomerase hTERT promoter
- prostate-specific antigen promoter COX-2 promoter
- albumin gene promoter core promoter of hepatitis virus
- adenovirus refers to any virus that can be classified as an adenovirus, that is, an adenoviridae characterized as a non-enveloped virus having an icosahedral nucleocapsid containing a double-stranded DNA genome.
- Adoviridae refers to any virus belonging to the family. This term includes any adenovirus capable of infecting humans or animals, including all groups, subgroups and serotypes that utilize the CAR as a receptor to infect target cells.
- Adenoviruses of the present invention include, but are not limited to, avian, canine, equine, bovine, ovine, porcine, human or frog adenoviruses.
- the adenovirus of the present invention is a human adenovirus, ie an adenovirus capable of infecting humans.
- a "serotype" is each immunologically different type of adenovirus. In the case of human adenovirus, there are at least 57 serotypes classified into several subgroups (A to G).
- the adenovirus of the present invention is a recombinant adenovirus.
- the term "recombinant” refers to an adenovirus that is not naturally produced.
- These recombinant adenoviruses contain one or more modifications compared to subtypes. Such modifications include, but are not limited to, modifications to the adenovirus genome that is packed into particles to make an infectious virus.
- replication-deficient viruses ie, non-reproducible viruses
- modifications include those known in the art, such as deletion of one or more of the E1a, E1b, E2a, E2b, E3 or E4 coding regions.
- Adenovirus particles consist of a capsid that encloses viral DNA.
- capsid is a viral protein shell formed by subunits called capsomers, which may be pentagonal or hexagonal.
- capsomers which may be pentagonal or hexagonal.
- Adenoviral capsid takes the form of an icosahedron with 20 equilateral triangles. Capsid Most of them are formed by hexon protein, and each vertex is a complex formed by fenton base and fiber protein.
- the adenovirus of the present invention may have modifications in its genome sequence that confer selective replication in cells.
- the adenovirus of the present invention may contain a tissue-specific promoter or a tumor-specific promoter.
- the adenovirus further comprises a tissue-specific promoter or a tumor-specific promoter.
- the term "recombinant” also includes replication-conditional adenoviruses that replicate preferentially in certain types of cells or tissues, but with little or no replication in other types. do.
- adenoviruses replicate in abnormally proliferating tissues such as solid tumors and other neoplasms.
- viruses are sometimes referred to as “cytolytic” or “cytopathic” viruses (or vectors), and “oncolytic” viruses (or vectors) when they have such an effect on neoplastic cells.
- adenovirus hexon protein or "hexon protein” (conventionally referred to as “protein II”) is a protein in adenoviruses that self-assembles to form trimers each having a hexagonal shape. Refers to the major structural protein found in capsid. 240 hexon trimers assemble to form an adenovirus capsid. The hexon protein is essential for viral capsid assembly, icosahedral symmetry determination of the capsid and capsid integrity. Although major structural features of the hexon protein are common among adenovirus serotypes, the size and immunological properties of the hexon protein differ between serotypes.
- hexon protein is a non-limiting example, corresponding to the hexon protein of human adenovirus C serotype 5, registered on February 19, 2014 Accession No. P04133 to the sequence of the UniProt database protein defined; A protein defined by the sequence of the UniProt database with accession number P03277 registered on February 19, 2014, corresponding to the hexon protein of human adenovirus C serotype 2; A protein defined by the sequence of the UniProt database of accession number P42671 registered on February 19, 2014, corresponding to the hexon protein of avian adenovirus gal1 (strain Phelps); and the protein defined by the sequence of the UniProt database with accession number P11819 registered on February 19, 2014, corresponding to the hexon protein of human adenovirus F serotype 40. .
- This expression covers all natural variants of the hexon protein that occur naturally in different subgroups or serotypes.
- the expression "outer surface of hexon protein” refers to a region exposed on the surface of the capsid of hexon protein.
- Loop 1 (L1) and Loop 2 (L2) of the hexon protein are reported to be exposed on the outer surface of the viral capsomere structure.
- L1 includes six hypervariable regions (HVRs), that is, HVR1 to HVR6, and L2 includes a seventh hypervariable region (HVR7).
- HVRs hypervariable regions
- HVR7 hypervariable region
- hypervariable region refers to a region in which there is a difference between the length and sequence determining the serotype of adenovirus in surface exposed loops.
- the names used for HVRs are as mentioned in Crawford-Miksza and Schnurr (Crawford-Miksza and Schnurr. 1996. Virology, 224(2):357-367).
- the HVR is but not limited to HVR1.
- the sequence encoding the transfection binding moiety is, according to the numbering of the hexon protein of GenBank accession number BAG48782.1 dated June 14, 2008, which corresponds to the hexon protein from human adenovirus serotype 5, in which the fusion protein produced is hexon
- the D154 amino acid of the protein is inserted to contain the transferrin binding moiety.
- the adenovirus is an oncolytic adenovirus, and preferably the adenovirus genome has a mutation in one or more genes selected from the group consisting of E1a, E1b, E4 and VA-RNA to achieve selective replication in tumors. further comprising, adenovirus.
- the adenovirus genome further comprises capsid modifications to increase adenovirus infectivity or target it to receptors present on tumor cells.
- the modification of the capsid is to insert the RGD motif into the H1 loop of the adenoviral fibroprotein.
- the adenovirus genome is a chimeric adenovirus genome derived from one given serotype, comprising fragments or regions of the genome that have been replaced with homologous regions of the genome from another serotype.
- such chimeric adenovirus is a human derived from serotype 5, comprising a portion of the fiber gene replaced with a homologous region derived from another serotype, preferably human adenovirus 3 or human adenovirus 35. It is an adenovirus.
- modification of the capsid is by substituting a portion of the fiber gene with a homologous portion derived from another adenovirus serotype to form a chimeric adenovirus.
- the type 5/3 adenovirus includes a part of the fiber gene derived from type 3 adenovirus, and the other genome means a virus derived from type 5 adenovirus.
- the adenovirus genome comprises additional genes inserted into its genome.
- the gene is used for gene therapy or vaccine immunization.
- the gene is a gene used for cancer gene therapy, more preferably a group consisting of at least a prodrug-activating gene, a tumor-suppressor gene, a gene encoding an anti-tumor interfering RNA, and an immunostimulatory gene. It is a gene selected from.
- the present invention relates to a pharmaceutical composition for treating cancer comprising the adenovirus of the present invention as an active ingredient.
- the adenovirus of the present invention is an oncolytic adenovirus.
- oncolytic adenovirus refers to any adenovirus that is replication-competent or capable of replicating in tumors, even without selectivity.
- the therapeutic action of oncolytic adenoviruses is based on their ability to cytolyze tumor cells to replicate and eradicate.
- Apoptosis of tumor cells can be assessed by measuring the number of viable cells, cytopathic effect, apoptosis of tumor cells, by PCR in tumor cells (e.g., metabolic markers, Western blot of viral proteins or reverse transcription of viral genes required for replication). It can be detected by any state-of-the-art method, such as protein synthesis or tumor size reduction.
- composition of the present invention can be administered systemically.
- composition of the present invention may be for intravenous administration.
- the composition of the present invention may further include an anti-cancer agent, for example, acibacin, aclarubicin, acodazole, acronisin, adozelesin, alanosin, aldesleukin, allo Purinol Sodium, Altretamine, Aminoglutethimide, Amonafide, Amplogen, Amsacrine, Androgens, Anguidin, Aphidicolin Glycinate, Asaray, Asparaginase, 5-Azacytidine , Azathioprine, Bacillus Calmete-Guerin (BCG), Baker's Antipol, Beta-2-deoxythioguanosine, Bisantrene HCl, Bleomycin Sulfate, Bulseppan, Butionine Sulfoximin, BWA 773U82 , BW 502U83/HCl, BW 7U85 mesylate, cerasemide, carbetimer, carboplatin, car
- cisplatin paclitaxel, 5-fluorouracil (5-FU), methotrexate, doxorubicin, daunorubicin, cytosine arabinoside, etoposide, melparan, chlorambucil, cyclophosphamide, vindesine, mycobacteria Tomycin, bleomycin, tamoxifen and taxol, more preferably cisplatin, paclitaxel or 5-fluorouracil (5-FU), but combined treatment with the composition of the present invention to achieve the purpose of showing a synergistic effect on anticancer effect To do so, it is not limited thereto.
- the cancer is colorectal cancer, breast cancer, uterine cancer, cervical cancer, ovarian cancer, prostate cancer, brain tumor, head and neck carcinoma, melanoma, myeloma, leukemia, lymphoma, stomach cancer, lung cancer, pancreatic cancer, non-small cell lung cancer, liver cancer , esophageal cancer, small intestine cancer, perianal cancer, fallopian tube carcinoma, endometrial carcinoma, vaginal carcinoma, vulvar carcinoma, Hodgkin's disease, bladder cancer, kidney cancer, ureteral cancer, renal cell carcinoma, renal pelvic carcinoma, bone cancer, skin cancer, head cancer, Cervical cancer, cutaneous melanoma, intraocular melanoma, endocrine gland cancer, thyroid cancer, parathyroid cancer, adrenal cancer, soft tissue sarcoma, urethral cancer, penile cancer, central nervous system (CNS) tumor, primary CNS lymphoma, spinal cord tumor, It may be any one selected from the group consisting of
- composition of the present invention may further include an adjuvant.
- adjuvant any one may be used without limitation, but, for example, Freund's complete adjuvant or incomplete adjuvant may be further included to increase the effect.
- composition according to the present invention may be prepared in the form of incorporating the active ingredient into a pharmaceutically acceptable carrier.
- the pharmaceutically acceptable carrier includes carriers, excipients and diluents commonly used in the pharmaceutical field.
- Pharmaceutically acceptable carriers that can be used in the composition of the present invention include, but are not limited to, lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, gum acacia, alginate, gelatin, calcium phosphate, calcium silicate, cellulose, methyl cellulose, polyvinyl pyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil.
- composition of the present invention may be formulated and used in the form of oral formulations such as powders, granules, tablets, capsules, suspensions, emulsions, syrups, aerosols, external preparations, suppositories or sterile injection solutions according to conventional methods.
- Solid preparations for oral administration include tablets, pills, powders, granules, capsules, etc., and such solid preparations contain at least one or more excipients such as starch, calcium carbonate, sucrose, lactose, and gelatin in addition to active ingredients. It can be prepared by mixing etc. In addition to simple excipients, lubricants such as magnesium stearate and talc may also be used.
- Liquid preparations for oral administration include suspensions, solutions for oral administration, emulsions, syrups, etc.
- compositions for parenteral administration include sterilized aqueous solutions, non-aqueous solvents, suspensions, emulsions, freeze-dried formulations and suppositories.
- Propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable esters such as ethyl oleate may be used as non-aqueous solvents and suspending agents.
- a base for suppositories witepsol, tween 61, cacao paper, laurin paper, glycerogelatin, and the like may be used.
- the holy substance according to the present invention can be administered to a subject by various routes. All modes of administration can be envisaged, eg oral, intravenous, intramuscular, subcutaneous, intraperitoneal injection, but intravenous administration is most preferred.
- the dosage of the pharmaceutical composition according to the present invention is selected in consideration of the age, weight, sex, and physical condition of the subject. It is obvious that the concentration of the single domain antibody included in the pharmaceutical composition can be variously selected depending on the subject, and is preferably included in the pharmaceutical composition at a concentration of 0.01 to 5,000 ⁇ g/ml. If the concentration is less than 0.01 ⁇ g/ml, pharmacological activity may not appear, and if the concentration exceeds 5,000 ⁇ g/ml, toxicity to the human body may be exhibited.
- composition of the present invention can be used for the prevention or treatment of cancer and its complications, and can also be used as an anticancer adjuvant.
- composition of the present invention is administered in a therapeutically effective amount or a pharmaceutically effective amount.
- pharmaceutically effective amount means an amount sufficient to treat a disease with a reasonable benefit/risk ratio applicable to medical treatment, and the effective dose level is dependent on the type and severity of the subject, age, sex, activity of the drug, and drug. sensitivity, time of administration, route of administration and excretion rate, duration of treatment, factors including concomitantly used drugs, and other factors well known in the medical field.
- the present invention relates to the use of an adenovirus comprising a nucleic acid encoding the transferrin-binding moiety of the present invention in the coding region of a hypervariable region (HVR) of a hexon protein for preventing or treating tumors.
- HVR hypervariable region
- the present invention relates to a method for treating cancer, wherein an adenovirus containing a nucleic acid encoding the transferrin-binding moiety of the present invention in the coding region of a hypervariable region (HVR) of a hexon protein is administered to a subject suffering from cancer.
- HVR hypervariable region
- Tbp29aa SEQ ID NO: 2
- Tbp55aa SEQ ID NO: 4
- Tbp29aa SEQ ID NO: 2
- Tbp55aa SEQ ID NO: 4
- Bio Basic Inc. was commissioned to synthesize a nucleotide sequence encoding a fusion protein including a nucleotide sequence (SEQ ID NO: 1) and a linker (SEQ ID NO: 5) at the N-terminus and C-terminus of Tbp55aa (SEQ ID NO: 4).
- the target sequence is amplified by PCR, and then the HVR1 position of the base sequence (SEQ ID NO: 14) encoding hexon of the pAd1128 (OD260, adenoviral plasmid) plasmid (154th amino acid of the base sequence encoding hexon) (gaa, E) and between the codons expressing the 155th amino acid (gac, D)), respectively, and transformed into E. coli DH10B. Thereafter, clones in which insertion of each transferrin-binding moiety was confirmed through colony PCR were mini-prepped, and then sequencing was requested to macrogen to confirm the nucleotide sequence again.
- adenovirus genome (comid) to be used as a material for producing adenovirus
- the pAd1128-tbp including each transferrin binding moiety coding sequence
- pAd1127 including E and PIX sites
- pAd1129 E3
- Sfil restriction enzyme
- FIG. 6 The vector structure of an adenovirus containing Tbp55aa containing a linker at the terminal and C-terminus is shown in FIG. 6 (adenovirus containing SEQ ID NO: 10; HVR1-(G 4 S 1 ) 3 -TBP 55aa).
- type 5/3 adenovirus CA10G-A (adenovirus comprising the sequence of SEQ ID NO: 12) containing an albumin binding domain (ABD) in the HVR1 region to be used as a positive control is shown in FIG. 4 .
- Example 2 It was confirmed whether the adenovirus containing the transferrin-binding domain prepared in Example 1 binds to transferrin in vivo to avoid antibody attack and kills cancer cells. Specifically, 100 ul of the lung cancer cell line A549 was dispensed in a 96-well plate so that 1 x 10 4 cells per well. The positive control, CA10G-A (type 5/3 adenovirus containing an albumin-binding moiety in the HVR1 region: adenovirus containing the sequence of SEQ ID NO: 12), contained 10 mg/ml of albumin before cell treatment for antibody avoidance. A binding reaction was performed at 4° C.
- HVR1-TBP 29aa of the present invention type 5/3 adenovirus containing the transferrin-binding moiety of SEQ ID NO: 1 in the HVR1 region
- HVR1-(G 4 S 1 ) 3 -TBP 55aa type 5/3 adenovirus comprising the transferrin-binding moiety and linker of SEQ ID NO: 3 in the HVR1 region
- the virus reacted with albumin or transferrin and the control virus (CA10G: type 5/3 adenovirus) (infectious units, IFU) were treated at 0, 5, 10, 20, 50 and 100 times the cell number, respectively, Adenovirus type 5 antibody (Abcam, ab6982) was treated with the culture medium at a concentration of 0.1 ng/ml.
- Adenovirus type 5 antibody (Abcam, ab6982) was treated with the culture medium at a concentration of 0.1 ng/ml.
- Sigma's cell division kit (XTT assay kit) was used to quantitatively evaluate the apoptotic ability by the virus, and to visualize the apoptotic ability by the virus, a 96-well plate was prepared using crystal violet reagent. was stained.
- Example 3 Construction of a virus containing a transferrin-binding domain at the HVR2 site
- Adenoviruses HVR2-Tbp 29aa and HVR2-(G4S1)3-Tbp 55aa containing transferrin binding moieties were constructed by inserting the nucleotide sequence encoding the protein into the HVR2 region of Hexon of the adenoviral vector, respectively. did
- the neutralizing antibody evasion ability of adenovirus HVR2-Tbp 29aa and HVR2-(G4S1)3-Tbp 55aa containing a transferrin-binding moiety in the HVR2 region of hexon of the adenoviral vector constructed in Example 3 above was measured in HVR1-(G 4 S 1 ) 3 -Tbp 55aa.
- 100 ul of the lung cancer cell line A549 was dispensed in a 96-well plate so that 1 x 10 4 cells per well.
- CA10GT HVR1-(G4S1)3-Tbp 55aa
- HVR2-Tbp 29aa type 5/3 adenovirus comprising the transferrin binding moiety of SEQ ID NO: 1 in the HVR2 region
- HVR2-(G4S1)3-Tbp 55aa Type 5/3 adenovirus comprising the transferrin-binding moiety of SEQ ID NO: 3 and a linker in the HVR2 region
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Abstract
Description
Claims (34)
- 트랜스페린(transferrin) 결합 모이어티(moiety)를 코딩하는 핵산을 헥손(hexon) 단백질의 과가변부(HVR)의 코딩 영역에 포함하는, 아데노바이러스.
- 제 1항에 있어서, 서열번호 1, 3, 8 또는 10의 핵산 서열을 포함하는, 아데노바이러스.
- 제 1항에 있어서, 트랜스페린 결합 모이어티는 서열번호 2 또는 4의 아미노산 서열을 포함하는, 아데노바이러스.
- 제 1항에 있어서, 트랜스페린 결합 모이어티의 N-말단, C-말단, 또는 N-말단 및 C-말단이 링커를 통해 헥손 단백질과 연결되는, 아데노바이러스.
- 제 4항에 있어서, 링커는 서열번호 5의 아미노산 서열을 포함하는, 아데노바이러스.
- 제 1항에 있어서, 헥손 단백질의 과가변부는 HVR1인, 아데노바이러스.
- 제 6항에 있어서, 헥손 단백질의 HVR1은 서열번호 7의 아미노산 서열을 포함하는, 아데노바이러스.
- 제 1항에 있어서, 트랜스페린 결합 모이어티를 코딩하는 핵산을 헥손을 코딩하는 염기서열의 154번째 아미노산과 155번째 아미노산을 발현하는 코돈의 사이에 포함하는, 아데노바이러스.
- 제 1항에 있어서, 헥손 단백질이 아데노바이러스의 캡시드로 조립될 때, 트랜스페린 결합 모이어티가 헥손 단백질의 외표면 상에 위치하게 되는, 아데노바이러스.
- 제 1항에 있어서, 아데노바이러스는 인간 아데노바이러스인, 아데노바이러스.
- 제 10항에 있어서, 인간 아데노바이러스는 인간 아데노바이러스 혈청형 1 내지 57로 이루어진 군으로부터 선택되는, 아데노바이러스.
- 제 10항에 있어서, 인간 아데노바이러스는 인간 아데노바이러스 혈청형 5인, 아데노바이러스.
- 제 10항에 있어서, 인간 아데노바이러스는 인간 아데노바이러스 혈청형 5/3인, 아데노바이러스.
- 제 1항에 있어서, 조직-특이적 프로모터 또는 종양-특이적 프로모터를 추가로 포함하는, 아데노바이러스.
- 제 14항에 있어서, 프로모터는 아데노바이러스의 내재적 유전자와 작동 가능하게 연결된, 아데노바이러스.
- 제 14항에 있어서, 프로모터는 E2F 프로모터, 텔로머라제 hTERT 프로모터, 티로시나제 프로모터, 전립선-특이 항원 프로모터, alpha-페토프로테인 프로모터 및 COX-2 프로모터로 이루어진 군으로부터 선택되는, 아데노바이러스.
- 제 15항에 있어서, 아데노바이러스의 내재적 유전자는 5'-ITR-C1-C2-C3-C4-C5 3-'ITR의 구조를 가지며;상기 C1은 E1A, E1B 또는 E1A-E1B를 포함하고;상기 C2는 E2B-L1-L2-L3-E2A-L4를 포함하며;상기 C3는 E3가 포함하지 않거나 E3를 포함하고;상기 C4는 L5를 포함하며; 및상기 C5는 E4를 포함하지 않거나 E4를 포함하는, 아데노바이러스.
- 제 17항에 있어서, E1A 및 E1B 사이에 IRES 서열이 추가로 포함된, 아데노바이러스.
- 제 17항에 있어서, 프로모터가 아데노바이러스의 내재적 유전자의 E1A 및 E1B와 작동가능하게 연결된, 아데노바이러스.
- 제 1항에 있어서, 외래 유전자를 발현하는 발현 카세트를 추가로 포함하는, 아데노바이러스.
- 제 20항에 있어서, 발현 카세트를 아데노바이러스의 내재적 유전자의 E3 부위에 포함하는, 아데노바이러스.
- 제 1항에 있어서, 상기 아데노바이러스는 항종양 아데노바이러스인, 아데노바이러스.
- 제 1항에 있어서, 종양분해성 아데노바이러스 (oncolytic adenovirus)인, 아데노바이러스.
- 제 1항에 있어서, 아데노바이러스의 감염성을 높이거나 또는 이를 종양 세포에 존재하는 수용체로 표적화하기 위한 캡시드 변형을 추가로 포함하는, 아데노바이러스.
- 제 24항에 있어서, 캡시드의 변형은 아데노바이러스 섬유 단백질의 H1 루프내 RGD 모티프를 삽입하는 것인, 아데노바이러스.
- 제 24항에 있어서, 캡시드의 변형은 섬유 유전자 또는 이의 일부를 다른 혈청형의 아데노바이러스로부터 유래된 상동적인 부분으로 치환하여 키메라 아데노바이러스를 형성하는 것인, 아데노바이러스.
- 제 26항에 있어서, 혈청형 3형 아데노바이러스 유래 섬유 유전자 또는 이의 일부로 치환한 캡시드를 포함하며, 섬유 유전자를 제외한 부분은 혈청형 5형 아데노바이러스 유래 유전자를 포함하는, 아데노바이러스.
- 제 1항에 있어서, 하나 이상의 비-아데노바이러스성 유전자를 포함하는, 아데노바이러스.
- 제 28항에 있어서, 비-아데노바이러스성 유전자는 암 유전자 치료에 사용되는 유전자인, 아데노바이러스.
- 제 29항에 있어서, 암 유전자 치료에 사용되는 유전자는 종양-억제인자 유전자, 항-종양성 간섭 RNA를 코딩하는 유전자 및 면역자극 유전자로 이루어진 군으로부터 선택되는, 아데노바이러스.
- 제 1항의 아데노바이러스를 유효성분으로 포함하는 암 치료용 약학적 조성물.
- 제 31항에 있어서, 전신으로 투여되는, 암 치료용 약학적 조성물.
- 트랜스페린 결합 모이어티를 코딩하는 핵산을 헥손 단백질의 과가변부(HVR)의 코딩 영역에 포함하는 아데노바이러스의 종양 예방 또는 치료 용도.
- 트랜스페린 결합 모이어티를 코딩하는 핵산을 헥손 단백질의 과가변부(HVR)의 코딩 영역에 포함하는 아데노바이러스를 암에 걸린 개체에 투여하는, 암 치료 방법.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024538680A JP2025503516A (ja) | 2021-12-21 | 2022-12-19 | 免疫回避性抗腫瘍アデノウイルス |
| EP22911810.4A EP4458973A4 (en) | 2021-12-21 | 2022-12-19 | IMMUNE-MASKING ANTITUMORAL ADENOVIRUS |
| CA3242110A CA3242110A1 (en) | 2021-12-21 | 2022-12-19 | Immune-cloaking antitumor adenovirus |
| CN202280085153.3A CN118451187A (zh) | 2021-12-21 | 2022-12-19 | 免疫逃避性抗肿瘤腺病毒 |
| AU2022421751A AU2022421751A1 (en) | 2021-12-21 | 2022-12-19 | Immune-cloaking antitumor adenovirus |
| US18/723,312 US20250382634A1 (en) | 2021-12-21 | 2022-12-19 | Immune-cloaking antitumor adenovirus |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KRPCT/KR2021/019511 | 2021-12-21 | ||
| KR10-2021-0183522 | 2021-12-21 | ||
| KR20210183522 | 2021-12-21 | ||
| KR20210183524 | 2021-12-21 | ||
| KR10-2021-0183523 | 2021-12-21 | ||
| KR10-2021-0183524 | 2021-12-21 | ||
| KR20210183523 | 2021-12-21 | ||
| PCT/KR2021/019511 WO2023120762A1 (ko) | 2021-12-21 | 2021-12-21 | 면역 회피성 항종양 아데노바이러스 |
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| WO2023121177A1 true WO2023121177A1 (ko) | 2023-06-29 |
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| Country | Link |
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| US (1) | US20250382634A1 (ko) |
| EP (1) | EP4458973A4 (ko) |
| JP (1) | JP2025503516A (ko) |
| KR (1) | KR20230095830A (ko) |
| CN (1) | CN118451187A (ko) |
| AU (1) | AU2022421751A1 (ko) |
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| WO (1) | WO2023121177A1 (ko) |
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- 2022-12-19 KR KR1020220177977A patent/KR20230095830A/ko active Pending
- 2022-12-19 CA CA3242110A patent/CA3242110A1/en active Pending
- 2022-12-19 WO PCT/KR2022/020712 patent/WO2023121177A1/ko not_active Ceased
- 2022-12-19 CN CN202280085153.3A patent/CN118451187A/zh active Pending
- 2022-12-19 JP JP2024538680A patent/JP2025503516A/ja active Pending
- 2022-12-19 US US18/723,312 patent/US20250382634A1/en active Pending
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Also Published As
| Publication number | Publication date |
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| EP4458973A1 (en) | 2024-11-06 |
| EP4458973A4 (en) | 2026-02-18 |
| JP2025503516A (ja) | 2025-02-04 |
| KR20230095830A (ko) | 2023-06-29 |
| AU2022421751A1 (en) | 2024-08-08 |
| CN118451187A (zh) | 2024-08-06 |
| US20250382634A1 (en) | 2025-12-18 |
| CA3242110A1 (en) | 2023-06-29 |
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